btrfs: clear __GFP_FS flag in the space cache inode
the object id of the space cache inode's key is allocated from the relative root, just like the regular file. So we can't identify space cache inode by checking the object id of the inode's key, and we have to clear __GFP_FS flag at the time we look up the space cache inode. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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@ -81,6 +81,8 @@ struct inode *lookup_free_space_inode(struct btrfs_root *root,
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return ERR_PTR(-ENOENT);
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}
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inode->i_mapping->flags &= ~__GFP_FS;
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spin_lock(&block_group->lock);
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if (!root->fs_info->closing) {
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block_group->inode = igrab(inode);
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@ -2535,8 +2535,6 @@ static void btrfs_read_locked_inode(struct inode *inode)
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BTRFS_I(inode)->flags = btrfs_inode_flags(leaf, inode_item);
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alloc_group_block = btrfs_inode_block_group(leaf, inode_item);
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if (location.objectid == BTRFS_FREE_SPACE_OBJECTID)
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inode->i_mapping->flags &= ~__GFP_FS;
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/*
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* try to precache a NULL acl entry for files that don't have
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